Add a feature flag for logging a11y checker results

Bug: 325420273
Fix: 330720821
Test: "m services.accessibility"
Change-Id: I40c8f0e7c2cead0cc51768d5d20d2a4ffb442587
diff --git a/services/accessibility/accessibility.aconfig b/services/accessibility/accessibility.aconfig
index 997f3af..a38264e 100644
--- a/services/accessibility/accessibility.aconfig
+++ b/services/accessibility/accessibility.aconfig
@@ -45,6 +45,13 @@
 }
 
 flag {
+    name: "enable_a11y_checker_logging"
+    namespace: "accessibility"
+    description: "Whether to identify and log app a11y issues."
+    bug: "325420273"
+}
+
+flag {
     name: "enable_magnification_joystick"
     namespace: "accessibility"
     description: "Whether to enable joystick controls for magnification"